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choroid
cho·roid / ˈkôrˌoid/ (also cho·ri·oid / ˈkôrēˌoid/ ) • adj. resembling the chorion, particularly in containing many blood vessels. • n. (also choroid coat) the pigmented vascular layer of the eyeball between the retina and the sclera. DERIVATIVES: cho·roi·dal / kəˈroidl/ adj. . |
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"choroid." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "choroid." The Oxford Pocket Dictionary of Current English. 2009. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O999-choroid.html "choroid." The Oxford Pocket Dictionary of Current English. 2009. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O999-choroid.html |
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choroid
choroid (ko-roid) n. the layer of the eyeball between the retina and the sclera. It contains blood vessels and a pigment that absorbs excess light and so prevents blurring of vision. See eye.
—choroidal (kŏ-roid-ăl) adj. |
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"choroid." A Dictionary of Nursing. 2008. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "choroid." A Dictionary of Nursing. 2008. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O62-choroid.html "choroid." A Dictionary of Nursing. 2008. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O62-choroid.html |
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choroid
choroid A pigmented layer, rich in blood vessels, that lies between the retina and the sclerotic of the vertebrate eye. At the front of the eye the choroid is modified to form the ciliary body and the iris.
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"choroid." A Dictionary of Biology. 2004. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. "choroid." A Dictionary of Biology. 2004. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O6-choroid.html "choroid." A Dictionary of Biology. 2004. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O6-choroid.html |
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choroid
choroid In the eye of a vertebrate, a layer of tissue lying immediately outside the retina that contains pigment and blood vessels.
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Cite this article
MICHAEL ALLABY. "choroid." A Dictionary of Zoology. 1999. Encyclopedia.com. 31 May. 2012 <http://www.encyclopedia.com>. MICHAEL ALLABY. "choroid." A Dictionary of Zoology. 1999. Encyclopedia.com. (May 31, 2012). http://www.encyclopedia.com/doc/1O8-choroid.html MICHAEL ALLABY. "choroid." A Dictionary of Zoology. 1999. Retrieved May 31, 2012 from Encyclopedia.com: http://www.encyclopedia.com/doc/1O8-choroid.html |
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